Welcome to the resource topic for 2024/1134
Title:
Exploiting signature leakages: breaking Enhanced pqsigRM
Authors: Thomas Debris-Alazard, Pierre Loisel, Valentin Vasseur
Abstract:Enhanced pqsigRM is a code-based hash-and-sign scheme proposed to the second National Institute of Standards and Technology call for post-quantum signatures. The scheme is based on the (U,U+V)-construction and it enjoys remarkably small signature lengths, about $1$KBytes for a security level of 128 bits. Unfortunately we show that signatures leak information about the underlying (U,U+V)-structure. It allows to retrieve the private-key with~100, 000 signatures.
ePrint: https://eprint.iacr.org/2024/1134
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